<resources>

  <!--
         Declare custom theme attributes that allow changing which styles are
         used for button bars depending on the API level.
         ?android:attr/buttonBarStyle is new as of API 11 so this is
         necessary to support previous API levels.
  -->
  <declare-styleable name="ButtonBarContainerTheme">
    <attr name="metaButtonBarStyle" format="reference" />
    <attr name="metaButtonBarButtonStyle" format="reference" />
  </declare-styleable>

</resources>